Huge Security Flaw Makes VPNs Useless for BitTorrent

TorrentFreak: Millions of BitTorrent users who have chosen to hide their identities through a VPN service may not be as anonymous as they would like to be. Due to a huge security flaw, those who use IPv6 in combination with a PPTP-based VPN such as Ipredator are broadcasting information linking to their real IP-address on BitTorrent.